Qq space shows how low the phone memory is.

There is something wrong with the space edition. It is recommended to upgrade to the latest version and try again.

See if your QQ space is temporarily blocked. Sometimes QQ will be temporarily closed when Tencent detects that there is a problem with QQ after it is stolen. You can modify the QQ password at this time.

It depends on your network and what kind of mobile phone you use. The memory of the domestic machine is small, so it is easy to prompt that the memory is insufficient, because it takes a little more traffic to upload your own conversation than to forward one.

My mobile phone has a similar situation. I gave him a reboot, that's for sure I don't usually ask similar questions. Remember to clear the cache of my mobile phone, whether it is smart or not, so your mobile phone will run very fast! I hope I can help you.